Standard ML Track Management

This page provides the Exercism community with the information and tools needed to manage the Standard ML track.

Students
1,665
Submissions
11,876
Mentoring Discussions
103

The Standard ML track needs attention ⚠️

Building

Practice Exercises

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Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Synced primary repo: 2809a3ddbe860a41ad120ea5bd245f7b90423eb3 (Updates should be instant)

Next goal: Implement 129 practice exercises. Find out more.
56 active practice exercises
Started
Attempts
Completions
Mentoring requests
Hello World Hello World
867
1,092 (avg. 1.3)
652 (75.2%)
0 (0.0%)
Leap Leap
396
1,262 (avg. 3.2)
269 (67.9%)
33 (8.3%)
Two Fer Two Fer
290
1,127 (avg. 3.9)
212 (73.1%)
38 (13.1%)
Scrabble Score Scrabble Score
16
126 (avg. 7.9)
11 (68.8%)
0 (0.0%)
Space Age Space Age
160
864 (avg. 5.4)
114 (71.3%)
2 (1.3%)
Strain Strain
10
24 (avg. 2.4)
9 (90.0%)
0 (0.0%)
Pangram Pangram
118
553 (avg. 4.7)
64 (54.2%)
3 (2.5%)
Collatz Conjecture Collatz Conjecture
110
665 (avg. 6.0)
82 (74.5%)
6 (5.5%)
Isbn Verifier Isbn Verifier
7
5 (avg. 0.7)
4 (57.1%)
0 (0.0%)
Kindergarten Garden Kindergarten Garden
4
2 (avg. 0.5)
2 (50.0%)
0 (0.0%)
Secret Handshake Secret Handshake
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Matching Brackets Matching Brackets
83
403 (avg. 4.9)
48 (57.8%)
4 (4.8%)
Matrix Matrix
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Run Length Encoding Run Length Encoding
4
4 (avg. 1.0)
2 (50.0%)
0 (0.0%)
Square Root Square Root
6
67 (avg. 11.2)
4 (66.7%)
0 (0.0%)
Allergies Allergies
71
396 (avg. 5.6)
43 (60.6%)
3 (4.2%)
All Your Base All Your Base
75
205 (avg. 2.7)
37 (49.3%)
4 (5.3%)
Anagram Anagram
53
198 (avg. 3.7)
35 (66.0%)
1 (1.9%)
Atbash Cipher Atbash Cipher
42
279 (avg. 6.6)
30 (71.4%)
0 (0.0%)
Bob Bob
61
255 (avg. 4.2)
37 (60.7%)
1 (1.6%)
Diamond Diamond
34
124 (avg. 3.6)
25 (73.5%)
0 (0.0%)
Difference of Squares Difference of Squares
56
167 (avg. 3.0)
43 (76.8%)
2 (3.6%)
Flatten Array Flatten Array
54
179 (avg. 3.3)
39 (72.2%)
2 (3.7%)
Wordy Wordy
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Hamming Hamming
58
153 (avg. 2.6)
43 (74.1%)
2 (3.4%)
List Ops List Ops
146
2,116 (avg. 14.5)
115 (78.8%)
1 (0.7%)
Nth Prime Nth Prime
39
111 (avg. 2.8)
28 (71.8%)
1 (2.6%)
Transpose Transpose
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Perfect Numbers Perfect Numbers
36
136 (avg. 3.8)
26 (72.2%)
1 (2.8%)
Armstrong Numbers Armstrong Numbers
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Pop Count Pop Count
6
26 (avg. 4.3)
4 (66.7%)
0 (0.0%)
Protein Translation Protein Translation
7
10 (avg. 1.4)
4 (57.1%)
0 (0.0%)
Rotational Cipher Rotational Cipher
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Phone Number Phone Number
36
111 (avg. 3.1)
26 (72.2%)
0 (0.0%)
Isogram Isogram
4
2 (avg. 0.5)
2 (50.0%)
0 (0.0%)
Luhn Luhn
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Pig Latin Pig Latin
35
113 (avg. 3.2)
20 (57.1%)
1 (2.9%)
Prime Factors Prime Factors
36
51 (avg. 1.4)
23 (63.9%)
1 (2.8%)
Raindrops Raindrops
44
167 (avg. 3.8)
31 (70.5%)
1 (2.3%)
Resistor Color Resistor Color
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
RNA Transcription RNA Transcription
37
100 (avg. 2.7)
27 (73.0%)
0 (0.0%)
Pythagorean Triplet Pythagorean Triplet
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Roman Numerals Roman Numerals
33
57 (avg. 1.7)
22 (66.7%)
0 (0.0%)
Sum of Multiples Sum of Multiples
43
107 (avg. 2.5)
28 (65.1%)
0 (0.0%)
Reverse String Reverse String
40
116 (avg. 2.9)
33 (82.5%)
1 (2.5%)
Acronym Acronym
21
51 (avg. 2.4)
16 (76.2%)
0 (0.0%)
Affine Cipher Affine Cipher
18
85 (avg. 4.7)
11 (61.1%)
2 (11.1%)
Darts Darts
5
8 (avg. 1.6)
4 (80.0%)
0 (0.0%)
Gigasecond Gigasecond
16
39 (avg. 2.4)
6 (37.5%)
0 (0.0%)
Sublist Sublist
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Queen Attack Queen Attack
5
2 (avg. 0.4)
2 (40.0%)
0 (0.0%)
Yacht Yacht
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
Triangle Triangle
17
97 (avg. 5.7)
13 (76.5%)
0 (0.0%)
Grains Grains
5
3 (avg. 0.6)
2 (40.0%)
0 (0.0%)
Pascals Triangle Pascals Triangle
21
52 (avg. 2.5)
12 (57.1%)
0 (0.0%)
Palindrome Products Palindrome Products
3
1 (avg. 0.3)
1 (33.3%)
0 (0.0%)
2 deprecated practice exercises
Started
Attempts
Completions
Mentoring requests
Accumulate Accumulate
90
150 (avg. 1.7)
77 (85.6%)
6 (6.7%)
Binary Binary
3
4 (avg. 1.3)
2 (66.7%)
0 (0.0%)
73 unimplemented practice exercises
Alphametics Alphametics
Bank Account Bank Account
Binary Search Binary Search
Binary Search Tree Binary Search Tree
Book Store Book Store
Bottle Song Bottle Song
Bowling Bowling
Change Change
Circular Buffer Circular Buffer
Clock Clock
Complex Numbers Complex Numbers
Connect Connect
Crypto Square Crypto Square
Custom Set Custom Set
D&D Character D&D Character
Dominoes Dominoes
DOT DSL DOT DSL
Eliud's Eggs Eliud's Eggs
Error Handling Error Handling
ETL ETL
Food Chain Food Chain
Forth Forth
Go Counting Go Counting
Grade School Grade School
Grep Grep
Hangman Hangman
High Scores High Scores
House House
Killer Sudoku Helper Killer Sudoku Helper
Knapsack Knapsack
Largest Series Product Largest Series Product
Ledger Ledger
Lens Person Lens Person
Linked List Linked List
Markdown Markdown
Meetup Meetup
Micro Blog Micro Blog
Minesweeper Minesweeper
Nucleotide Count Nucleotide Count
OCR Numbers OCR Numbers
PaaS I/O PaaS I/O
Parallel Letter Frequency Parallel Letter Frequency
Poker Poker
POV POV
Proverb Proverb
Rail Fence Cipher Rail Fence Cipher
Rational Numbers Rational Numbers
React React
Rectangles Rectangles
Resistor Color Duo Resistor Color Duo
Resistor Color Trio Resistor Color Trio
REST API REST API
Robot Name Robot Name
Robot Simulator Robot Simulator
Saddle Points Saddle Points
Satellite Satellite
Say Say
Series Series
SGF Parsing SGF Parsing
Sieve Sieve
Simple Cipher Simple Cipher
Simple Linked List Simple Linked List
Spiral Matrix Spiral Matrix
State of Tic-Tac-Toe State of Tic-Tac-Toe
Tournament Tournament
Tree Building Tree Building
Twelve Days Twelve Days
Two Bucket Two Bucket
Variable Length Quantity Variable Length Quantity
Word Count Word Count
Word Search Word Search
Zebra Puzzle Zebra Puzzle
Zipper Zipper

Programming Tags

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Help manage the tags used to group, filter and recommend solutions, approaches and articles.

0 tags

Test Runner

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Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Current version: adda32f24c44af90f7579f3ec1fc46218dd32084 (Takes up to 10 mins to deploy)

Next goal: Get Test Runners to Version 2. Standard ML is currently utilising a Version 1 Test Runner. Find out more.
Total Test Runner Runs
11,426
Test Run Pass Rate
29.1% (3328)
Test Run Fail Rate
69.9% (7982)
Test Run Error Rate
1.0% (116)

Representer

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Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Analyzer

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Build an Analyzer for Standard ML: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.